Update SonarSource/sonarqube-scan-action action to v6 (#56)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/go-coverage.yml

@@ -37,7 +37,7 @@ jobs:
           go test -coverprofile=unit.coverage.out -cover ./...
 
       - name: SonarQube Scan
-        uses: SonarSource/sonarqube-scan-action@v5
+        uses: SonarSource/sonarqube-scan-action@v6
         env:
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
         with: